1387187352 has 96 divisors (see below), whose sum is σ = 4001568480. Its totient is φ = 432614400.

The previous prime is 1387187323. The next prime is 1387187377. The reversal of 1387187352 is 2537817831.

It is a junction number, because it is equal to n+sod(n) for n = 1387187298 and 1387187307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 208477 + ... + 215027.

It is an arithmetic number, because the mean of its divisors is an integer number (41683005).

Almost surely, 2^1387187352 is an apocalyptic number.

1387187352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1387187352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2000784240).

1387187352 is an abundant number, since it is smaller than the sum of its proper divisors (2614381128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1387187352 is a wasteful number, since it uses less digits than its factorization.

1387187352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6753 (or 6746 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 1387187352 is about 37244.9641159714. The cubic root of 1387187352 is about 1115.2657713364.

It can be divided in two parts, 138718 and 7352, that added together give a triangular number (146070 = T₅₄₀).

The spelling of 1387187352 in words is "one billion, three hundred eighty-seven million, one hundred eighty-seven thousand, three hundred fifty-two".